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Problem Statement Given a string word, we want to calculate the minimum number of "pushes" required to type the string. Each character in...

#LeetCode Solution Time Complexity O(n) Space Complexity O(n) Approach: 1. first store the frequency of each string into hashmap. 2....

Problem statement You are given a list of “N” strings array. Your task is to check whether you can form a given target string using a...

Given an integer array arr, partition the array into (contiguous) subarrays of length at most k. After partitioning, each subarray has...

Given an array A and an integer target, find the indices of the two numbers in the array whose sum is equal to the given target. Note:...

Given a natural number in the form of a linked list, add 1 to it. Asked by Amazon Examples Linked List: 7→8→9 Resultant List: 7→9→0...

Asked by Amazon Given a linked list of the form: N0 → N1 → N2 → ....Nn-2 → Nn-1 Reorder the list in the following format: N0 → Nn-1 → N1...

Intuition in this question we have to check 3 conditions all the character of word1 should be present on word2 and vice-versa the...